Hi Ony!
Language Hacking here is linked with "Language Hacking, A conversation course for beginners", written by the polyglot Benny Lewis. In this book the Irish Polyglot explains his way to learn and speak a language through proven memory techniques, unconventional shortcuts and conversation strategies. As conversation is the main focus of this way of learning, at the end of each of the 10 units of the book there's a speaking mission, that prepares you to use the language you've learned to talk about yourself. Through italki community, you can share your personalized speaking mission with other learners, getting and giving feedback and extending your learning beyond the pages of the book.
In a few words, #LanguageHacking gives you the possibility of having a conversation in a new language, maybe it worth giving a trial ;)
Have a great day!